Convicted killer Karla Homolka volunteered at her children’s elementary school in Notre-Dame-de-Grâce last March, according to a report by Breakfast Television.

Homolka reportedly supervised kindergarten children from the Greaves Adventist Academy on a field trip in March and once brought her dog to the school for students to pet. The academy, a private Christian school, was aware of Homolka’s criminal past before she started volunteering there.

The Montreal Gazette had contacted Greaves Adventist Academy about Homolka’s alleged involvement with the school on May 17. At the time, school superintendent Marc Bouzy said the academy hadn’t received any complaints about Homolka.

“The school has been here for a long time and we have never been involved in anything contrary to the proper norms of the students,” Bouzy told the Montreal Gazette. “There is no reason for anyone to be concerned about the way we do things right now for the benefit of the students in our community.

“The ministry only gives permits to schools that are a safe place for students attending. In no way is it an issue for the community.”

The Seventh Day Adventist Church of Canada, which runs the school, told Breakfast Television Homolka isn’t a regular volunteer at the school and that she’s not allowed to be alone with the children.

Under provincial law, volunteers at elementary schools are supposed to undergo criminal background checks before interacting with students.

Homolka served 12 years in federal prison after pleading guilty to manslaughter in the deaths of two school girls. Her ex-husband, Paul Bernardo, is serving a life sentence for his role in multiple rapes and homicides.